Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Venhola, Aku"'
Autor:
Müller, Oliver, Pawlowski, Marcel S., Revaz, Yves, Venhola, Aku, Rejkuba, Marina, Hilker, Michael, Lutz, Katharina
Publikováno v:
A&A 684, L6 (2024)
Dwarf galaxies in groups of galaxies provide excellent test cases for models of structure formation. This led to a so-called small-scale crisis, including the famous missing satellite and too-big-to-fail problems. It was suggested that these two prob
Externí odkaz:
http://arxiv.org/abs/2403.08717
Autor:
Romero-Gómez, J., Peletier, Reynier F., Aguerri, J. A. L., Mieske, Steffen, Scott, Nicholas, Bland-Hawthorn, Joss, Bryant, Julia J., Croom, Scott M., Eftekhari, F. Sara, Falcón-Barroso, Jesús, Hilker, Michael, van de Ven, Glenn, Venhola, Aku
Using very deep, high spectral resolution data from the SAMI Integral Field Spectrograph we study the stellar population properties of a sample of dwarf galaxies in the Fornax Cluster, down to a stellar mass of $10^{7}$ M$_{\odot}$, which has never b
Externí odkaz:
http://arxiv.org/abs/2303.16020
Autor:
Eftekhari, F. Sara, Peletier, Reynier F., Scott, Nicholas, Mieske, Steffen, Bland-Hawthorn, Joss, Bryant, Julia J., Cantiello, Michele, Croom, Scott M., Drinkwater, Michael J., Falcon-Barroso, Jesus, Hilker, Michael, Iodice, Enrichetta, Napolitano, Nicola R., Spavone, Marilena, Valentijn, Edwin A., van de Ven, Glenn, Venhola, Aku
We explore the kinematic scaling relations of 38 dwarf galaxies in the Fornax Cluster using observations from the SAMI integral field spectrograph. We focus on the Fundamental Plane (FP), defined by the physical properties of the objects (scale lengt
Externí odkaz:
http://arxiv.org/abs/2209.05525
Autor:
La Marca, Antonio, Iodice, Enrichetta, Cantiello, Michele, Forbes, Duncan A., Rejkuba, Marina, Hilker, Michael, Arnaboldi, Magda, Greggio, Laura, Spiniello, Chiara, Mieske, Steffen, Venhola, Aku, Spavone, Marilena, D'Ago, Giuseppe, Raj, Maria Angela, Ragusa, Rossella, Mirabile, Marco, Rampazzo, Roberto, Peletier, Reynier, Paolillo, Maurizio, Challapa, Nelvy Choque, Schipani, Pietro
Publikováno v:
A&A 665, A105 (2022)
In this work, we extend the catalog of low-surface brightness (LSB) galaxies, including Ultra-Diffuse Galaxy (UDG) candidates, within $\approx 0.4R_{vir}$ of the Hydra I cluster of galaxies, based on deep images from the VST Early-type GAlaxy Survey
Externí odkaz:
http://arxiv.org/abs/2206.07385
Publikováno v:
A&A 664, A167 (2022)
We investigate the relations between nuclear star clusters (NSCs) and their host galaxies, and between the structural properties of nucleated and non-nucleated galaxies. We also address the environmental influences on the nucleation of galaxies in th
Externí odkaz:
http://arxiv.org/abs/2206.01490
Autor:
La Marca, Antonio, Peletier, Reynier, Iodice, Enrichetta, Paolillo, Maurizio, Challapa, Nelvy Choque, Venhola, Aku, Forbes, Duncan A., Cantiello, Michele, Hilker, Michael, Rejkuba, Marina, Arnaboldi, Magda, Spavone, Marilena, D'Ago, Giuseppe, Raj, Maria Angela, Ragusa, Rossella, Mirabile, Marco, Rampazzo, Roberto, Spiniello, Chiara, Mieske, Steffen, Schipani, Pietro
Publikováno v:
A&A 659, A92 (2022)
At ~50 Mpc, the Hydra I cluster of galaxies is among the closest cluster in the z=0 Universe, and an ideal environment to study dwarf galaxy properties in a cluster environment. We exploit deep imaging data of the Hydra I cluster to construct a new p
Externí odkaz:
http://arxiv.org/abs/2112.00711
Autor:
Venhola, Aku, Peletier, Reynier F., Salo, Heikki, Laurikainen, Eija, Janz, Joachim, Haigh, Caroline, Wilkinson, Michael H. F., Iodice, Enrichetta, Hilker, Michael, Mieske, Steffen, Cantiello, Michele, Spavone, Marilena
In this work we use Max-Tree Objects, (MTO) on the FDS data in order to detect previously undetected Low surface brightness (LSB) galaxies. After extending the existing Fornax dwarf galaxy catalogs with this sample, our goal is to understand the evol
Externí odkaz:
http://arxiv.org/abs/2111.01855
Autor:
Choque-Challapa, Nelvy, Aguerri, J. Alfonso L., Piña, Pavel E. Mancera, Peletier, Reynier, Venhola, Aku, Verheijen, Marc
We analyse a sample of twelve galaxy clusters, from the Kapteyn IAC WEAVE INT Cluster Survey (KIWICS) looking for dwarf galaxy candidates. By using photometric data in the $r$ and $g$ bands from the Wide Field Camera (WFC) at the 2.5-m Isaac Newton t
Externí odkaz:
http://arxiv.org/abs/2108.09610
Autor:
Saifollahi, Teymoor, Janz, Joachim, Peletier, Reynier F., Cantiello, Michele, Hilker, Michael, Mieske, Steffen, Valentijn, Edwin A., Venhola, Aku, Kleijn, Gijs Verdoes
Ultra-compact dwarf galaxies (UCDs) were serendipitously discovered by spectroscopic surveys in the Fornax cluster twenty years ago. Nowadays, it is commonly accepted that many bright UCDs are the nuclei of galaxies that have been stripped. However,
Externí odkaz:
http://arxiv.org/abs/2104.00004
Publikováno v:
A&A 647, A80 (2021)
The transformation of late-type galaxies has been suggested as the origin of early-type dwarf galaxies in galaxy clusters. Venhola et al. analysed correlations between colour and surface brightness for galaxies in the Fornax cluster binned by luminos
Externí odkaz:
http://arxiv.org/abs/2101.10728